Thank you. Suggested approach is working . when there is no index.html maintaining proper namespace got it working.
sap.ui.require([
"com/test/mock/localService/mockserver"
], function (mockserver) {
// set up test service for local testing
mockserver.init();
});
And using edit mockdata on right click of metadata.xml could create data and could succesfuly run and test in FLP. its working! 